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Plutonium-32 has a half-life of 14.2 days How many half-lives have passed in 99.4 days?
Wiki User
∙ 14y ago
A half-life is simply the amount of time it takes for a substance to reduce itself by half. In this case, every 14.2 days half of plutonium-32 is converted into something else. All you have to do is divide 99.4 by 14.2, which is exactly 7. About 0.78% of the plutonium will be remaining at this time.
Wiki User
∙ 14y ago
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